Mold for sash-weights.



1'. H. HAMILTON.

MOLD FOB BASH WEIGHTS.

, APPLICATION FILED IAR.13, 1911 994,388, Patented June 6,1911. 1

2 SHEETS-SHEET 2.

WITNESSES UNITED STATES PATENT oFFroE.

.FRAN K H. HAI/IILTON, OF PERTH AMBOY, NEW JERSEY. ASSIGNOR TO VULCANDETIN- NING COMPANY, OF NEW YORK, N. Y., A. CORPORATION OF NEVI JERSEY.

MOLD FOR SASH-WEIGHTS.

Specification of Letters Patent.

Patented June 6, 1911.

Application filed March 13, 1911. Serial Ito. 614,064.

To all whom it may concern:

Be it known that I. FRANK H. ILUIILTON, a citizen of the United States,residing at No. Rector street, Perth Amboy, county of Middlesex, Stateof New Jersey, have invented certain new and useful Improvements inMolds for Sash-\Veights; and I do hereby declare the following to be afull, clear, and exact description of he invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

These improvements consist in the produetion of head andcharacter-forming cores of extremely simple and useful design and theirapplication to one-piece or non-separaole molds.

It is desirable and it is well known in the are of molding to indicateby a numeral or other reference character cast in the surface of a sashweight, the number, weight or size thereof and it is also well known inthe are of casting sash weights to form onepiece sand molds forcylindrical sash weights by inserting a number of cylindrical patternsin a gate, ramming the sand. thereabout and drawing the patterns out,leaving only the end openings in the molds to be closed by suitable headforming pieces or cores afterward applied and secured. This practice hasalso permitted of sash weights of various lengths and consequentlyvarying weights being formed through the use of the same gate andcylindrical patterns. So also have head forming molds and cores beenmade providing for the change of designating characters, which may beapplied to the molds for making the various sizes of weights which maybe made with these patterns and which have been of more or lessintricate construction or necessitated the employment of more or lessintricate devices for their formation or application. Anotherobjectionable feature of this type of mold has been the employment offrames or metal holders which accompanied the head and character coreswhen placed in the completed mold and would be there subjected to thecorroding and baking heat of casting, besides that encountered in thecore ovens and which eventually have to be separated from the sand ofthe broken mold and cleaned before being used again.

This invention contemplates overcoming these objectionable features byconstructing the all sand head and character forming cores asillustrated in the accompanying drawings and as hereinafter described,the head forming core being applicable to all lengths of sash weightmolds and the character matrix core quickly attachable thereto andsecured in place by the placement of the head core in the mold.

In the drawings Figure 1 represents a section of the end of a one-piecemold with the head and character forming cores applied thereto. Fig. 2is a similar view taken at right angles to that shown in Fig. 1. Fig. 3shows the head end of a sash weight as cast in the mold shown in Fig. 1.Fig. 4 is a view in perspective of the head end of the sash weightshowing the numeral raised upon its end surface. Fig. 5 is a view inperspective of the head forming core showing the method of applicationthereto of the character forming core. Fig. (3 is a section through thecore box for molding the head forming core. Fig. 7 is a similar viewtaken at right angles to that shown in Fig. (3. F S is a section throughthe multiple core box used in molding the character forming cores. Fig.9 is a plan of the core box shown in Fig. 8, and Fig. 10 is across-section of Fig. 8, one of the matrices being shown in elevation.

Referring to the drawings, A represents a portion of a sand mold inwhich the cylindr'tal print 0 remains after the endwise withdrawal ofthe pattern. A head forming core B is shown applied to the open end ofthe print a in Figs. 1 and 2 in the manner to complete the mold for theformation of the sash weight shown in Figs. 3 and 4.

This head forming core B is provided with a flange 11 which abuts theend of the mold A and insures the correct positionment of the core itwithin the print a and this )ositionment is maintained. when the weightis cast, by packing sand behind the core B and between the mold A andthe end wall of the flask.

The sash weight head (see Fig. 4) as east in the completed mold has aU-shaped channel c for the sash cord and the bridge 11 forming thischannel is provided with a des ignating character cast. in its uppersurface, the numeral 2 being that shown in the drawing. The head formingore B has the form of a plug to lit the end of the print a and isprovided with the tiange b at its outer end to limit its insertion intothe print while beneath the arch in such manner that it may be formed bythe same draw-out bar 9 which forms that space, as hereinafter describedin connection with the core box for making the head forming core. Acharacter forming core C is made dovetail in cross section to fit thedovetail slot or channel 7 in the head forming core B and is in lengthequal to the diameter of the body portion of the core B so that whenitis inserted in the channel 7' and the core B is inserted in the mold Ait is secured againstmovement axially of the. mold 'by the dovetailconstruction of the channel in which it rests and lengthwise of saidchannel by abutment with the walls of the mold A. Obviously the channel7 need not be of dovetail cross section though that is a simpleconstruction, but may be of any suitable undercut form to constitute aretaining channel.

In Figs. 6 and T are shown sections of the core box D with the draw-outbar '9 inserted transversely therethrough. The cross section of the barr comprises the upper dovetail portion for forming the dovetail channelf in the core B and the larger lower body portion designed to form thespace beneath the arch c in said core which eventually shapes the bridge(I of the sash weight. The core box D is provided with openings in itsside walls conforming to the bar 9 and after the bar is inserted thesand is rammed into and struck from the top of the core box and .the barg withdrawn when the completed core may be jarred from the box.

In Figs. 8. 9 and 10 a multiple core plate for forming the characterforming cores C is shown. This plate consists of a body h which isperforated with a series of rectanular openings in which a series ofmatrices 7. i. are mounted with their character bearing faces normallyflush with the face of the body It. The several matrices 2'. 1'. aresecured to a connecting bar 7' which is held in the normal position bythe heads of screws In. l'. and springs Z. Z. A top plate m is securedupon the body 71 and has perforations with inclined side walls whichperforations coincide with those in the body It and form the side wallsof the molds for the several cores which are fiiied with sand, tampedand struck off. The connecting bar is then pressed to the body Itejecting the character cores C. C. and the springs I. Z. return thematrices to their normal positions.

It is obvious that various changes may be made in the design and in manyof the details of construction of the herein described devices withoutdeparting from the spirit of this invention.

hat I claim is:

1. A sash weight mold comprising a nonseparablc body mold, ahead-formi1,1g-plugcore fitting said mold and provided with a transverseretaining channel, and a character-forming core adapted to be insertedin said channel from the side of said plug core and to be retainedtherein by the walls of said body mold after the insertion of said plugin said body mold; substantially as described.

2. A sash weight mold comprising a nonseparable body mold, ahead-forming plug core having a portion adapted to enter and fit saidmold and a flange adapted to abut against the end of said mold, saidplug core being formed with a transverse retaining channel, and acharacter-forming core adapted to be inserted in said channel from theside of said plug core and to be retained therein by the walls of saidbody mold after the insertion of said plug in said body mold;substantially as described.

3. A. sash weight mold comprising a nonseparable-body mold, ahead-forming-plugcore fitting said mold and provided with an arch and atransverse retaining channel at the base of and running through saidarch, a character-forming core adapted to be inserted in said channelfrom the side of said plug with its character surface facing said archand to be retained thereby by the walls of said body mold after theinsertion of said plug in said body mold; substantially as described.

l. A sash weight mold comprising a body mold, a head forming plug coreconforming to said body mold and provided with a transverse dovetailedchannel, a flange on said plug corc adapted to abut against the end ofsaid body mold, an arch on said plug core bridging said channel and adovetailed character-forming core adapted to be inserted in said channelfrom the side of said plug with its character surface facing said archand to be retained therein by the walls of said body mold after theinsertion of said plug in said body mold; substantially as described.

mold. of a head-forming core having an arch, and a separatecharacter-forming core secured to said head-forming core and spanned bysaid arch; substantially as described.

6. The combination with a sash weight mold, of a head-for'ming-plug-coreformed with a transverse clanncl having undercut o. The combination witha, sash weight side walls and an inch bridging said chansaidhead-forming core Within said mold; nel; substantially as described.substantmlly as described. 10

4. The combination with a sash Weight In testimony whereof I aflix mysignature, mold, of a head-formmg-plug-core formed in presence of twowitnesses.

with a tansverse retaining channel adapted FRANK H. HAMILTON. for therece ation of a character-forming \Vitnesses:

core and a fiange upon said head-forming LESTER J. SAUL,

core adapted to engage with and position \VIILLIAM H. DAVIS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0. i

